Wanted to see video of Allison getting "out of shape"

[Krazymaan]

That's a good one.

So heres my next question......what did he do wrong to make that happen?

I was in my STV Pro Comp videoing them. He did nothing wrong really. We were cruising over 90mph at that time, There were lots of wakes, small ones. It was just a matter of flying off of a small wake and landing not ideally on top of another wake. It was easier to see in real life than on video. Many times I was drifting to the right to keep off of the wakes, especially at that speed.

[flattracker60]

So if its dead calm water (or 1" chop), is it too much trim that causes the hook?

[CUDA]

So if its dead calm water (or 1" chop), is it too much trim that causes the hook?

Yeah blow out

about 17 years ago I knew someone that just bought a 2002xb asked me to teach him to drive it , he had a stock polished CLE gear case on a 260 , I was told later you need a

nose cone on one of them to really push it , we were on calm water and I just kept touching the trim till blow out , we stayed straight but I cleaned off his hull

The bottom of a Allison is a straight line to the very front when that front touches at high speed you get the hook , if it was just curled up a little bit in the very front it would

not happen (dig in) I was talking to Wally Lambkin (Triad boats) about this,

his V bottom boats were very similar to a Allison bottom (he got sued) but did not hook, for this little difference .

Best looking V bottom made !

[speedinstream]

Slowing down is the hard thing to learn in a ally takes a bit to keep from doing what that red xb did I would guess he was trying to slow down quick

[mrcrsr]

I locked an engine up at 110 on my xr2002, almost went up on a river bank. Needless to say I sold the boat after that!

[aeneas]

...

[JPEROG]

Left turns like the one in PatchesII video are pretty rare. Here is another nice one (and luckily the only thing that got hurt was some underwear ).

https://www.youtube.com/watch?v=RCdTqpSfq-c

You need to watch Patchesll video (post #10) again. The boat hooked right as typical "hook and spin".
Joe

[baja200merk]

How many have hooked with the pencil roll removed

[JCSmile]

So if its dead calm water (or 1" chop), is it too much trim that causes the hook?

Pretty much. Excessive trim causes blowout so you lose your prop bite and the nose drops (which is already sky high because you were trimmed too high). The Allison has a deep deadrise and a pretty pronounced pad so the keel grabs and will spin you one way or another. In the case of that video, I think the boat just grabbed a roller that was parallel to the pad and then after that it's tough to make steering corrections to get back on the pad.

[perfmarine1]

When you let off you must be ready for the torque transfer to go the other way. If you are not ready the boat will turn on it's side and at high speed the boat decides what to do not the driver. The hardest part of driving any V bottom is the slow down,practice at slow speed as you work faster. You can not simply jump in a boat and take it up to a 100 mph and not know how to slow down. Be careful.

[StratosVT]

You need to watch Patchesll video (post #10) again. The boat hooked right as typical "hook and spin".
Joe

I stand corrected! Had to watch that video 3 times to see it going right....its either an optical illusion or too much cough syrup.

[patchesII]

Had mine blowout twice on me. Once at 112 mph in the video below at the 2:30 mark and once at 110 mph. Both times it just dropped the left side and stayed straight. Got my attention though

https://youtu.be/__RDYOUh-i0

[David]

Trim and engine height contribute. Loose steering doesn't help.

[xb03fs]

I've just had slow xb allison boats. I have yet to hook one at hoil one 7 years experience now. In my experience the boat tells you what it likes and dosent like. And you have to put one on the edge to start acting bad, at least in the low 90 and under range.

if the motor is too high it seems they will try to hook below 60 more so than at wot. My
best speeds come about 1/2"/3/4" above where the boat will tolerate aggressive trim. In fact with a wot motor height the boatwont begin to lift till 50/60 mph.

at a conservative height leaving 3-5 mph on the table for a given prop. The boat seems very forgiving.

what the don't like...
1. Dumping the trottle
2. Slowing down too fast
3. Trying to run a big number in balanced
4. Too little trim when turning
5. Too little trim


contrary to popular belief, with the exception of a top end pass with higher motor heights than normal....Allison's love the trim.

[whipper]

Most has been said and agree with everything for sure. The biggest thing for me is respect the power and speed your going. Blow out to much trim,hook maybe from the blow out or slowed down to fast forcing the bow thats raised up to slam the water and dig in to hard ect ect. All in all though I call mine very forgiving if that makes sense since were not talking about a slow boat. I ve pushed it to hard with some props thinking there was more when there wasnt! Thats a good way to get in trouble. You have to be aware at all times not only were wakes might be when travelling real fast but were your trims at and what speed your prop is capable of with the power and setup you have helps to. As said longer learning curve than most other boats. Ive heard it said that coming from an Allison to other boats the learning curves are greatly reduced? Its like you put everything you know into driving an Allison every time ya go out. Thats what I like about them so much. Some may not like that and want a boat that may not be as intense? Over time all this become second nature but you still always are at attention above 65mph. Below that your not balancing on the pad and just driving any old boat unless below that your under hard acceleration to top speed. Then your time under 65 from a rolling start will be very brief! haha Ive hooked mine a few times, stood her on end once and spun once. All preventable by me except the standing on end one. That was the result of a 30 pitch prop splitting at 95 mph. it started to wheelie then picked right up on end and she pirouetted standing on the transom facing the other way!! Ive split a few props since and never had that happen at all! This one was very very very thin. So i think it may have just acted like a parachute I dont know. But got my attention for sure. Thought I was going over when I was looking at the sky! lol That was years ago. For many years of boating since not much bad has ever happen. Im alot more aware of things now than i used to be. Thats all part of the learning curve. Pushing any boat toward her limits all the time will show some moments im sure.